Note: Vivillon has 20 different forms, 18 of which are based on the geographic location entered into the 3DS when the game was started. A map may be located here: https://bit.ly/3efLEWC

It is not possible to change the Vivillon Form mid-playthrough. Other forms are only obtainable via trading with other players or restarting a secondary X/Y game with the 3DS changed to a different region.

Not all forms are available depending on where the 3DS system was originally sold. For example, American players cannot access the Tundra, Garden, Monsoon, Meadow, River, or Elegant Vivillons

The Fancy Pattern and Poke Ball Pattern Vivillons were event-only distributions and are not obtainable during standard gameplay.